问题
填空题
一种主要的DNA修复途径称（），包括一系列（）酶，它们都能识别并切去DNA上不正常碱基。
答案
参考答案：碱基切除修复；DNA糖基化
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一种主要的DNA修复途径称（），包括一系列（）酶，它们都能识别并切去DNA上不正常碱基。
参考答案：碱基切除修复；DNA糖基化
| 用单词的适当形式填空。 | |
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| 1. Please ____ the window. It's hot in the room. 2. Mr. Green likes _____ in China very much. 3. —What _____ your father _____? —He is a doctor. 4. Uncle Wang _____ a kite for me. He is busy. 5. My father often _____ to bed at 10:00 in the evening. 6. Can you _____ in the river? 7. There _____ a ruler and two pencils on the desk. 8. Kate wants _____ a new watch. His old one is broken. 9. Listen! The girls ______ in the classroom. How happy they are! 10. Li Ming's mother is a teacher. She _____ English in our school. |